Secondary bacterial infections may complicate influenza:
Influenza infection may be complicated by bacterial super-infection, most commonly with
Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus aureus
(including MRSA), or
Group A Streptococcus (GAS,
Of note, Orange County has had several severe GAS cases reported recently, complicating influenza-like illness (ILI) episodes in children. Others around the country have anecdotally reported similar events.
Clinicians taking care of patients with ILI should consider secondary bacterial infection, especially in patients who seem to be improving and then worsen, or in patients who are severely ill.